// JavaScript Document
if (screen.width <= 800)  {
  document.write('<link rel="stylesheet" type="text/css" href="../css/left2.css">');
}
if ((screen.width > 800)&&(screen.width < 1280))  {
  document.write('<link rel="stylesheet" type="text/css" href="../css/mainStyle.css">');
}
if (screen.width >= 1280) {
  document.write('<link rel="stylesheet" type="text/css" href="../css/mainStyle.css">');
}